Jet pump pipe assembly



Aug- 25, 1953 .1.5. ARMSTRONG JET PUMP PIPE ASSEMBLY Filed July l2. 1948 IN VEN TOR.

JOHN E. ARMSTRONG H/S ATTRIVEYS Y Patented Aug. 25, 1953 JET PUMP PIPE ASSEMBLY John E. Armstrong, El Cerrito,

Jacuzzi Bros., Incorporated, a

California Calif., assgnor to corporation of Application July 12, 1948, Serial No. 38,284

(Cl. S-260) 2 Claims.

My invention relates to jet pumps and more particularly to that portion of a pump system which forms the pressure and suction lines in a jet pump installation. Y

In a pump system involving a jet pump, the jet pump, particularly in deep well installation, is installed in the well bore or casing for cooperation with a motor driven pump at substantially ground level, in the pumping of water from a well. The jet pump is supported in its installed position in the well bore or casing by the suction line and pressure line connecting the jet pump to the motor driven pump.

In making an installation, both the suction line and pressure line are according to prior practice, individually built up of galvanized pipe, by threading and coupling sections of such pipe at the site of the installation, thus requiring considerable time and labor. In conjunction with such an installation, a further problem is encountered in building up the suction line and pressure line to identical lengths, so as to facilitate the coupling of these lines to the motor driven pump.

Among the objects of the present invention are: A

(1) To provide a novel and improved jet pump Y installation; y

(4) To provide a novel and improved pipe arrangement for a jet pump installation which is of lighter weight and longer life than those of prior art design and construction;

(5) To provide a novel and improved pipe arrangement for a jet pump'installation which can be prefabricated for quick and easy assembly at the location of installation.

Additional objects of my invention will be brought out in the following description of a preferred embodiment of the same taken in conjunction with the accompanying drawings wherein- Figure 1 is an elevational yView of a jet pump installation embodying the present invention;

Figure 2 is a pipe assembly unit involved in the present invention;

Figure 3 is a view in section taken in the plane 3'-3 of Figure 2 and illustrating one form of coupling flange; Y

Figure 4 is a corresponding View illustrating a different form of coupling flange;

Figure 5 is a longitudinal section through the coupled ends of a pair of assembled pipe assembly units and depicting the manner of assembling such units together as well as assembling 'the individual pipe sections in the coupling flanges;

Figure 6 is a view corresponding to that of Figure 5 for an installation in well bores of small diameter;

Figure 7 is a fragmentary View depicting the lower end of a jet pump installation such as that of Figure 1, but illustrating a different form of coupling between the pipe assembly and the injector coupled to the lower extremity of such pipe assembly.

Referring to the drawings for details of my invention in its preferred form, I have illustrated for this -purpose in Figure l, a pump installation involving a conventional type motor driven pump assembly l which is customarily installed at substantially ground level. Suchl pump at its lower end connects to a suction line V5 and a pressure line l, both such lines extending down into the well bore or casing for connection to and support of a jet pump 9.

'Ihe principal feature of the present invention resides in forming the suction line and pressure line of pipe assembly units I l such as illustrated in Figure 2, in which a section I3 of the suction line and a section l5 of the pressure line are coupled together at their extremities by coupling flanges l1 whereby a plurality of such pipe assembly units may be joined end to end with suitable interposed gaskets IS to simultaneously form the pressure and suction lines of a jet pump installation of any desired length.

It is apparent that such pipe assembly units, regardless of how constructed, may be prefabricated for assembly with other similar units at the location of installation, and that such an instailation may be eiected quickly and eiciently and with a minimum of eiort. When thusly assembled the suction line and pressure line must terminate in the same plane thus facilitating the coupling thereof to the power driven pump.

In coupling the assembled pipe assembly units to jet pumps and power driven pumps which were designed for threaded connection to individual pipes as in prior types of installations, the pipe assembly units at the extremities of an installation will be devoid of coupling flanges, and each pipe section will in turn be tted with an adapter V2| for effecting the ycoupling to either pump as illustrated in Figure 1.

However, I prefer that both the power driven pump and the jet pump be provided with a coupling flange 23 complementary to the coupling 3 flange of the pipe assembly units, whereby the pipe assembly units may be standardized throughout the entire suction line and pressure line, though variations in the length of such pipe assembly units is contemplated where such variations may prove of advantage. l

While the pipe sections I3 and I5 could be threadedly assembled to the coupling flanges in the fabrication of the pipe assembly units, the pipe sections are preferably welded, brazed or soldered to such coupling flanges, and this is of considerable signicance in` thevpresent invention, by reason of the fact that such permissible manner of afhxing the pipe sections in the coupling flanges allows of the use of thin walled piping or tubing. Inasmuch as thin walled tubing is readily obtainable in substantially light non-corrosive metals such as copper, aluminum, etc., a durable installation will be assured, while its light weight is an important factor to be considered in the installing and servicing of such system. a

Each coupling flange is formed with a pair of spaced cylindrical passages therethrough, each of a diameter to comfortably receive its end of a pipe section, following which the pipe section is secured therein as by welding, brazing, or soldering as previously indicated, to provide a leaktight joint.

The flange I'I of Figures 2 and 3 is formed with a pair of oppositely disposed bolt openings 'l in a vertical plane passing between the pipe sections while the flange 29 illustratedin Figure i provides for two pairs vof, bolt openings, each pair defining a line through the center of one of the cylindrical passages.`

For most installations, the through cylindrical passages in the flanges are of uniform diameter throughout as depicted in Figure 5, thus permitvting the pipe sections to terminate ilush with the face of the ii'ange.

In some installations, however, the well bore or casing is of such small 'diameter as to place limiting lrestrictions as to the size of flanges which can be employed. For the smaller size flanges, passages of uniform 'diameter throughout might Well weaken the flange. To avoid unnecessary Weaken'ing of such flange under the circumstances, the pipe sections do 'not terminate flush with the face of the iiang'e as previously, but end up against 'a shoulder 3|, with each flange passage terminating at the faceof the flange at a smaller diameter corresponding to the inside diameter of associated pipe section.

Aside from Athe many advantages already atl tributed to the present invention, the coupling flanges, in the completed installation, serve to mechanically tie together the suction line and pressure line at spaced points and thereby greatly strengthen and rigidify the installation.

a Thus While I have illustrated and described my invention in great detaily the same is subject to alteration and modification without departing from the underlying principles involved, and I, accordingly, do not desire to be limited in my protection to such details, except as may be necessitated by the appended claims.

I claim:

1. A structural arrangement involving a jet pump, comprising in combination, a vertically suspended pressure and suction line assembly including a plurality of pipe assembly units, each comprising a pair of pipe sections, one of said pipe sections being in the pressure line and the other of said pipe sections being in the suction line, means mechanically coupling said pipe sec'- tions at one end in spaced relationship to each other, means similarly coupling said pair of pipe sections at their other ends; means coupling said pipe sections to aligned pipe sections of an adjacent pipe assembly unit; and a jet pump coupled to and supported from the lowest of said pipe assembly units.

2. A structural arrangement involving a jet pump, comprising in combination, a vertically suspended pressure and suction line assembly including a plurality of pipe assembly units, each comprising a pair of pipe sections, one of said pipe sections being in the pressure line and the other of said pipe sections being in the suction line, a common flange mechanically coupling said pipe sections at one end in spaced relationship to each other, a common flange similarly coupling said pair of pipe'sections at their other ends; means coupling said flanges to complementary flanges of adjacent pipe assembly units; and a jet pump coupled to and supported from the lowest of said coupled pipe assembly units.

JOI-IN E. ARMSTRONG.

References cited in the sie of this patent UNITED STATES PATENTS Number Name Y Date 451,654 aipieyY May 5, 1891 1,085,481 Prash Jan. 27, 1914 1,591,214 Hancock July 6, 1926 1,876,627 Davis et a1 Sept. 13, 1932 1,953,701 mark Y Apr. s, 1934 2,390,393 Rubly Dec. 4, 1945 

